Determine the mass of a body moving at a speed of 18 m / s. The impulse of the body is 810 kg m / s.

Given:

v = 18 meters per second – the speed at which the body is moving;

p = 810 kg * m / s – momentum of a moving body.

It is required to determine m (kilogram) – the mass of a moving body.

To determine body weight, you must use the following formula:

p = m * v, from here we find that:

m = p / v;

m = 810/18 = 90/2 = 45 kilograms.

Answer: the mass of a moving body is 45 kilograms.